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https://issues.apache.org/jira/browse/HBASE-17537?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15838530#comment-15838530
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Appy commented on HBASE-17537:
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verifying if it's true, looking at TableQueue#isAvailable()
> Remove Queue#isAvailable() since we have waits/wakes after HBASE-17067
> ----------------------------------------------------------------------
>
> Key: HBASE-17537
> URL: https://issues.apache.org/jira/browse/HBASE-17537
> Project: HBase
> Issue Type: Sub-task
> Components: master, proc-v2
> Reporter: Appy
> Assignee: Appy
> Priority: Minor
> Fix For: 2.0.0
>
> Attachments: HBASE-17537.master.001.patch
>
>
> Earlier, run-queues could have empty queues or queues for which exclusive
> locks are already taken. Thus poll() on table/server run-queue might have
> returned a Queue which didn't have any valid procs to run.
> With wait/wake on exclusive locks doing {removeFrom|addTo}RunQueue and poll
> removing queues when last element is removed, i think we can remove this
> function now.
> (am finding these things when working on a larger patch, but there are
> changes like this which seem too critical to mess up, so am creating smaller
> focused patches for them).
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